package com.atguigu.gulimall.order.config;

import feign.RequestInterceptor;
import feign.RequestTemplate;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.context.request.RequestAttributes;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;

import javax.servlet.http.HttpServletRequest;

@Configuration
public class GuliFeignConfig {
    @Bean("requestInterceptor")
    public RequestInterceptor requestInterceptor(){
        return new RequestInterceptor(){

            @Override
            public void apply(RequestTemplate template) {
                //1. 拿到刚进来的请求
                ServletRequestAttributes requestAttributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
                if(requestAttributes != null) {
                    HttpServletRequest request = requestAttributes.getRequest();
                    if (request != null) {
                        //同步请求头数据
                        String cookie = request.getHeader("Cookie");
                        //新请求同步老的cookie
                        template.header("Cookie", cookie);
                    }
                }
            }
        };
    }
}
